<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<?php
			$zy = "你好";
			$zyy = "PHP语言";
			function lxt()
			{
				$zy = "我喜欢";
				echo $zy;
				global $zyy;
				echo $zyy;
			}
			lxt();
		?>
	</body>
</html>